/**
* Methods on plugin should be called via reflection, because the real plugin object is in parent
* classloader, but plugin class may be defined in app classloader as well introducing
* ClassCastException on same class name.
*
* @param pluginClass class name of the plugin - it is used to resolve plugin instance from plugin
* manager
* @param appClassLoader application classloader (to resolve plugin instance)
* @param method method name
* @param paramTypes param types (as required by reflection)
* @param params actual param values
* @return method return value
*/
public static Object callPluginMethod(
Class pluginClass,
ClassLoader appClassLoader,
String method,
Class[] paramTypes,
Object[] params) {
Object pluginInstance =
PluginManager.getInstance().getPlugin(pluginClass.getName(), appClassLoader);
try {
Method m = pluginInstance.getClass().getDeclaredMethod(method, paramTypes);
return m.invoke(pluginInstance, params);
} catch (Exception e) {
throw new Error(
String.format("Exception calling method {} on plugin class {}", method, pluginClass), e);
}
}
/**
* Initialize plugin for a classloader.
*
* @param pluginClass identify plugin instance
* @param appClassLoader classloader in which the plugin should reside
*/
public static void callInitializePlugin(Class pluginClass, ClassLoader appClassLoader) {
PluginManager.getInstance()
.getPluginRegistry()
.initializePlugin(pluginClass.getName(), appClassLoader);
}